Methanol production begins at the Tokyo Plant
Hydrogen peroxide production begins at the Yamakita Plant

1937

Production of phenol resin, plastic laminate and materials for molding begin at the Tokyo Plant

1938

Ammonia Persulfate production begins at the Yamakita Plant

1949

Potassium Persulfate production begins at the Yamakita Plant

1950

Enoki Plant established at the Niigata Plant
Naniwa Plant established and caustic soda production begins

1952

Methanol production begins at the Niigata Plant

1953

Methanol production ceases at the Tokyo Plant
Production of pentaerythritol begins
Liquid chlorine production begins at the Naniwa Plant

1954

Formalin production begins at the Niigata Plant

1956

Matsuhama Plant established at the Niigata Plant
Ammonia, urea and Ammonium sulfate production begins

1957

Formalin production ceases at the Niigata Plant
Sodium hypochlorous acid production begins at the Naniwa Plant

1958

Formalin production at the Niigata Plant ceases
Sodium hypochlorite production begins at the Naniwa Plant

1960

Prussic acid, ACH and MMA production begins at the Niigata Plant
Mizushima Plant established, and production of plasticizers and xylene resin begins

1961

Trimethylolpropane production begins at the Tokyo Plant
Polycarbonate production begins at the Osaka Plant

1962

Phthalic anhydride production begins at the Mizushima Plant
Yokkaichi Plant established

1963

Hydrogen peroxide production begins at the Yokkaichi Plant

1964

Production of sodium Persulfate and liquid chemical polishing agents begin at the Yamakita Plant

1965

Polycarbonate production begins at the Yokkaichi Plant

1966

Methyammine production begins at the Niigata Plant
Neopentylglycol production begins at the Mizushima Plant

1967

Hydrosulfite production begins at the Tokyo Plant
Formic acid production at the Osaka Plant ceases
Hydrogen Persulfate production at the Yamakita Plant ceases
DMF, MMA and MAA ester production begins at the Niigata Plant

1968

Production of the four isomers of xylene begins at the Mizushima Plant
Formalin production begins at the Yokkaichi Plant
Production of organic titanates begins at the Yamakita Plant

1969

AGIC begins isophthalic acid production at the Mizushima Plant
Oxalic acid production begins at the Yokkaichi Plant

1970

MXDA production begins at the Niigata Plant
Production of water treatment agents begins at the Yamakita Plant

1972

Mizushima Aroma begins purified terephthalic acid production at the Mizushima Plant
Oxalic acid production ceases at the Osaka Plant

1973

Hydrosulfite production begins at the Niigata Plant

1975

Production of isophthalic chloride begins at the Naniwa Plant
Production of toluic acid begins at the Mizushima Plant

1976

Production of glass epoxy copper clad laminates begin at the Tokyo Plant

1977

Production of AGELESS begins at the Tokyo Plant
Kashima Plant established

1978

Hydrogen peroxide production begins at the Kashima Plant

1979

Production of polycarbonate ceases at the Yokkaichi Plant

1980

Production of formalin begins at the Mizushima Plant

1981

Production of BT Laminate begins at the Tokyo Plant
Production of aromatic aldehydes begins at the Mizushima Plant
Production of polyacetal and sodium percarbonate begins at the Yokkaichi Plant
Production of terephthalic chloride begins at the Naniwa Plant
Production of super pure Hydrogen peroxide begins at the Yamakita Plant
Production of Dimethyl ether begins at the Niigata Plant

Production of MX nylon and super pure ammonium hydroxide begins at the Niigata Plant

1988

Co-generation equipment begins operation at the Mizushima Plant
Production of DMAC and DAM begins at the Niigata Plant

1989

Co-generation equipment begins operation at the Niigata Plant
Polycarbonate production begins at the Kashima Plant

1990

Production of napthalene dicarboxylic acid begins at the Mizushima Plant
Production of hydrazine begins at the Yokkaichi Plant

1991

Production of Lens Monomer begins at the Naniwa Plant
New filling plant for super pure Hydrogen peroxide established at the Yamakita Plant
Production of AnaeroPack begins at the Tokyo Plant
Aromatic resin production begins at the Mizushima Plant

1992

Production of RP System begins at the Tokyo Plant
Co-generation equipment begins operation at the Yokkaichi Plant

1997

Production of MMA using the new ACH method begins at the Niigata Plant

1998

Production of water treatment agents begins at the Tokyo Plant

1999

Production of water treatment agents cease at the Yamakita Plant
Production of hydrosulfite ceases at the Tokyo Plant, consolidate at the Niigata plant
Production of magnetic garnet single crystal begins at the Tokyo Plant
Production of Trimethylolpropane ceases at the Tokyo Plant
Production of Trimethylolpropane begins at the Mizushima Plant

2000

Naniwa Plant becomes a branch factory of the Yokkaichi Plant
Electrolysis production at the Naniwa Plant ceases

2001

Production of Folmalin ceases at the Tokyo Plant, consolidate Japan Folmalin Industrial Co.,Ltd.

2002

Production of Urea ceases at the Niigata Plant
Production of Polycarbonate ceases at the Osaka Plant, Polycarbonate Sheet specialized

2003

Production of Modified Polyphenylene ether ceases at the Yokkaichi Plant.

2004

Production of Cooper-Clad-Laminate ceases at the Tokyo Plant, integrate with Electrotechno Co.,Ltd
Production of Ethylamine ceases at the Niigata Plant